IIT

In order to have an idea about syllabus of B.Tech CSE, you may refer to following link:
https://www.iitr.ac.in/departments/CSE/pages/Academics+Course_Structure_BTech_in_CSE_New_.html. Syllabus is similar in all IITS with minor differences.

Hello Abhishek,
Please refer to this linl to get more insights of the colleges based on your rank:
https://www.resonance.ac.in/reso/news/jee-advanced-branch-allotment.aspx

Hello Karthik,
I think you can get the top IITs like Madras, Bombay, Kanpur, etc. if this is your AIR.
for the official opening and closing ranks for 2016 refer :
http://josaa.nic.in/Result2016/result/OpeningClosingRank.aspx

Mahatma Jyoti Rao Phoole University
University of Rajasthan
IIS University
Subodh College
NIMS University
Maharani College
Rajasthan University of Health Sciences

Some IITs do offer robotics but not at B.Tech level. Robotics is offered as a subject when you approach for M.Tech in IIT Kanpur, Mumbai or BHU. But if you want to pursue robotics later, it is advisable to choose Mechanical, electronics or computer science at B.Tech level.

Please go to the following link and check the participating institutions.
https://www.jeeadv.ac.in/

No, you cannot appear for IIT-JEE after 2 years from clearing 12th.

Unless you pass all your subjects, you can't. Try to answer on demand from NIOS and you will be able to get admission.

By taking JEE Mains followed by JEE Advanced.
You will only be eligible for JEE Advanced if you clear JEE Mains and only if you get good rank in JEE Advanced, you will get admission in IIT.

Hello Mahesh,
Yes, GATE exam is for BE graduates to get into IITs for pursuing ME or M.Tech. GATE scores are also being accepted by many other universities for M.Tech or ME programs.